Can't access the network through Safari, iTunes, etc., but can through Firefox? Check proxy settings
If you are unable to load Web pages in Safari, connect to the iTunes Store in iTunes, and otherwise unable to access network services through Apple applications (and some third-party applications), ...
Proxy .pac files cause CPU spiking, iTunes crashes Proxy .pac files, used to automatically choose among different proxy configurations, are causing some serious issues under Mac OS X 10.5.3. We ...
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